<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./src/react.js"></script>
    <script src="./src/react-dom.js"></script>
    <script src="./src/babel.js"></script>
</head>
<style>
    .one{
        color: red;
    }
    .two{
        color: green;
    }
</style>
<body>
    <div id="app"></div>
</body>
<script type="text/babel">
    let falg=false;
let c;
if(falg){
    c=<h1>111</h1>
}else{
    c=<p>2222</p>
}
ReactDOM.render(
    // c,
    <div>
        <h1 style={ {color:'red',background:'black'} }>大憨憨</h1>
        {falg==true?<h1>111</h1>:<p>555</p>}
        <h1 className='one'>憨der</h1>
        <h1 className={falg==true?'one':'two'}>6789</h1>
        
        </div>,
    document.getElementById('app')
)
</script>

</html>